A lower-carbon product is not an impact-free product. The environmental case should account for extraction, manufacturing, use and recovery together.
Start with the full lifecycle
The IEA’s 2024 assessment finds that, on a global average, a medium-sized battery electric car has roughly half the lifecycle emissions of an equivalent combustion car. That calculation includes manufacturing and energy use; it is not a zero-emissions claim. Results vary with the vehicle and electricity system. Source: IEA
This finding should be part of any honest critique. The useful debate is how to reduce the remaining footprint, how comparisons are made and whether a policy achieves the greatest benefit for the resources it consumes.
The mine does not disappear
The IEA identifies water stress, land and biodiversity impacts, emissions, community impacts and governance risks in critical-mineral supply chains. Mining conditions differ substantially by place and process. A single water-use number for “lithium” cannot represent every deposit or production route. Source: IEA
Our position is that responsibility should follow the material across borders. A cleaner urban street should not become an excuse to disregard damage at the point of extraction.
Cobalt needs precision
The US Department of Labor documents child-labour risks in cobalt supply chains from the Democratic Republic of the Congo. This is a serious due-diligence issue, not proof that every cobalt shipment involves abuse. Source: US Department of Labor
Nor does every lithium-ion battery contain cobalt: lithium iron phosphate, or LFP, uses neither cobalt nor nickel in its cathode. Chemistry should be identified before attributing a material’s risks to a product. Source: IEA
What a credible green claim should show
Publish the comparison vehicle, battery size, production assumptions, driving distance, electricity mix and end-of-life assumptions. Report local environmental and social impacts alongside carbon: a lifecycle carbon result cannot answer every question about water, labour or biodiversity.
Our editorial view is that smaller material demands, longer useful lives and verifiable recovery deserve as much attention as selling the next new battery. Use the IEA’s comparison tool to explore assumptions rather than treating any one lifecycle number as universal. Source: IEA
Sources & further reading
- EV Battery Supply Chain SustainabilityIEA · 19 December 2024Intergovernmental research
- Sustainable and Responsible Critical Mineral Supply ChainsIEA · 2023Intergovernmental research
- Lithium-ion battery supply chains: child-labour risksUS Department of Labor · Accessed September 2026Public authority
- Global EV Outlook 2026: Electric vehicle batteriesIEA · 2026 · data for 2025Intergovernmental research
- Compare lifecycle emissions from electric and conventional carsIEA · 23 April 2024Intergovernmental research
Publication dates, study periods and source types are retained in the source library. Editorial recommendations are our own.